class_docstr: **Bases:** :class:`GLGraphicsItem <pyqtgraph.opengl.GLGraphicsItem.GLGraphicsItem>`
  
  Displays image data as a textured quad.
code: def setData(self, data):
      self.data = data
      self._needUpdate = True
      self.update()
  
file_path: pyqtgraph/pyqtgraph/opengl/items/GLImageItem.py
imports: from OpenGL.GL import *
  import numpy
  from ..GLGraphicsItem import GLGraphicsItem
label_desc: Use image node_id 3 for calling the GLImageItem obj's underlying member method code with example usage: obj.setData(data) without return types